I have a pretty big bag that I use for workouts, and in it is always everything I need. It's always in the bag so that I never forget anything for a workout. Above you can see some of my essentials that are always in my bag, except for the caps that is more of a summer essential. I want to start doing more walks/jogging outside when the weather is nice, and the caps will come in handy then. I of course always need a waterbottle when I'm working out, and I'm trying do be better at drinking more water when I'm working out, but I don't always feel like I need that much. The Rehband's are supporting my knees when I do heavy squats, and I use them because it get's a little bit easier for my legs, and I sort of feel like my legs get a little bit more "bouncy" in a way, it's hard to explain, haha. And music is so important of course, and it's great with these wireless headphones from Kygo's collection, because then my cell phone can stay in my bag. They shut out most of the outside noise as well, so I'm just completely in my own world when I'm using these.